from math import *
p=-1
print (" Calcul  des  surfaces")
print ("         de")
print ("  figure geometrique")
print ("")
print ("(0) sphere         carre (1)")
print ("(2) triangle      disque (3)")
print ("(4) losange   parallelo. (5)")
print ("(6) rectagle   tri.rect. (7)")
print ("(8) Trapeze")
print ("")
Choix=int(input("faire le choix [1 ; 6] "))
if Choix==0:
  print ("Surface")
  print ("Sphere")
  print ("")
  print ("S= 4 * pi * r * r")
  print ("")
  r=float(input("r ? "))
  S=(4*pi*r*r)
if Choix==1:
  print ("Surface")
  print ("Carre")
  print ("")
  print ("S= c * c")
  print ("")
  c=float(input("c ? "))
  S=(c*c)
if Choix==2:
  print ("Surface")
  print ("Triangle")
  print ("")
  print ("S= (1/2) * (b * h)")
  print ("")
  b=float(input("b ? "))
  h=float(input("h ? "))
  S=0.5*(b*h)
if Choix==3:
  print ("Surface")
  print ("Disque")
  print ("")
  print ("S= pi * r * r")
  print ("")
  r=float(input("r ? "))
  S=pi*r*r
if Choix==4:
  print ("Surface")
  print ("Losange")
  print ("")
  print ("S= (1/2) * (D * d)")
  print ("")
  D=float(input("D ? "))
  d=float(input("d ? "))
  S=0.5*(D*d)
if Choix==5:
  print ("Surface")
  print ("Parallelogramme")
  print ("")
  print ("S= (b * h)")
  print ("")
  b=float(input("b ? "))
  h=float(input("h ? "))
  S=(b*h)
if Choix==6:
  print ("Surface")
  print ("Rectangle")
  print ("")
  print ("S= (L * l)")
  print ("")
  L=float(input("L ? "))
  l=float(input("l ? "))
  S=(l*L)
if Choix==7:
  print ("Surface")
  print ("Triangle rectangle")
  print ("")
  print ("S= (1/2) * (a * b)")
  print ("")
  a=float(input("a ? "))
  b=float(input("b ? "))
  S=0.5*(b*a)
if Choix==8:
  print ("Surface")
  print ("Trapeze")
  print ("")
  print ("S= (1/2) * (a+b) * h")
  print ("")
  a=float(input("a ? "))
  b=float(input("b ? "))
  h=float(input("h ? "))
  S=0.5*(b+a)*h
S=round(S, 4)
print ("Surface = ",S)
Choix=int(input("PAUSE"))